Then, I pulled the excess around the back and installed a few safety pins.
Ta-Da! A pretty decent seat cover!
If my children weren't so diametrically opposed to headrests, I would stick those back in and it would be really secure. Unfortunately, they are just the wrong height for that. You win some, you loose some. Also, I used some old crib sheets to cover the two bucket seats in the middle. I think the manufacturers of bucket seat covers actually just use a crib sheet as the pattern for their products. They work great!